Initial principal amount of loans securitized.

No definition available.

Name:	hrb_InitialPrincipalAmountOfLoansSecuritized
Namespace Prefix:	hrb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loans Sold To Trust, With Claims of Breach of Contract and Indemnity

+ References

No definition available.

+ Details

Name:	hrb_LoansSoldToTrustWithClaimsofBreachofContractandIndemnity
Namespace Prefix:	hrb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Securitization Transactions

+ References

No definition available.

+ Details

Name:	hrb_SecuritizationTransactions
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.25)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingenciesLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

This is the principal amount outstanding for securitized loans only (across all types of loans).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107314-111719

+ Details

Name:	us-gaap_PrincipalAmountOutstandingOnLoansSecuritized
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LitigationCaseAxis=hrb_MGRIDLLCv.MerrillLynchMortgageLendingIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=hrb_SccMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=hrb_ClaimswithKnowledgeofOutstandingPrincipalAmountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationCaseAxis=hrb_EderalHomeLoanBankofChicagov.BankofAmericaFundingCorporationetalMember
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Litigation And Related Contingencies (Details) $ in Millions	35 Months Ended
	Nov. 30, 2007 transaction	Jul. 31, 2015 USD ($)	Apr. 30, 2015 USD ($) lawsuit	Jul. 31, 2014 USD ($)	Apr. 05, 2013 loan	Oct. 15, 2010 USD ($)
Loss Contingencies [Line Items]
Loss Contingency Accrual		$ 9.3	$ 8.9	$ 23.7
Number of loans sold to trust \| loan					159
Securitization Transactions \| transaction	38
MGRID LLC v. Merrill Lynch Mortgage Lending Inc [Member]
Loss Contingencies [Line Items]
Number Of Lawsuits \| lawsuit			20
MGRID LLC v. Merrill Lynch Mortgage Lending Inc [Member] \| SCC [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability			$ 14,000.0
MGRID LLC v. Merrill Lynch Mortgage Lending Inc [Member] \| SCC [Member] \| Claims with Knowledge of Outstanding Principal Amount [Member]
Loss Contingencies [Line Items]
Estimated Litigation Liability			$ 4,000.0
Pending Litigation [Member] \| ederal Home Loan Bank of Chicago v. Bank of America Funding Corporation, et al [Member]
Loss Contingencies [Line Items]
Initial principal on loans securitized						$ 50.0
Principal outstanding on loans securitized		$ 32.0